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Figure 2 Effect of risk factors on ACH (30 µg/min) and SNP (40 g/min) induced coronary microvascular dilation measured as % change in coronary vascular resistance compared with baseline. *p < 0.05, **p 0.01 compared with 0 risk factors. By analysis of variance, p = 0.025 for ACH and p > 0.1 for SNP responses between groups.